摘要:
The invention provides novel Zr MOFs, in particular compounds having a surface area of at least 1020 m2/g or if functionalized, having a surface area of at least 500 m2/g.
摘要:
An alkenoic acid derivative of the formula ##STR1## in which X and Y are identical or different and represent sulfur, sulfoxide, sulfone, an alkylene chain, --SCH.sub.2 --, or oxygen or a direct bond,W represents --CH.dbd.CH-- or --CH.sub.2 --CH.sub.2 --,o represents a number 1 to 5,A and B are identical or different and represent carboxyl, carboxymethylene, tetrazolyl or tetrazolylmethylene, or --CO.sub.2 R.sup.9 or --CH.sub.2 CO.sub.2 R.sup.9 or --CONR.sup.10 R.sup.11 or nitrilen represents a number 1 to 10,m represents a number 0 to 7,T and Z are identical or different and represent oxygen or a direct bond andR.sup.2, R.sup.3, R.sup.8 are identical or different and represent hydrogen, alkyl, alkoxy, halogen, trifluoromethyl, trifluoromethoxy, cyano or nitro andR.sup.9 is lower alkyl and R.sup.10 and R.sup.11 are hydrogen, lower alkyl, alkylsulfonyl or arylsulfonyl or together are an alkylene chain to form a ringand pharmaceutically acceptable salts thereof. Such alkenoic acid derivatives are useful as leucotriene disease antagonists.
摘要:
Chlorosulfonylbenzoylchloride having the formula ##STR1## wherein X is hydrogen, halogen or nitro is prepared by reacting phosgene with an aromatic sulfocarboxylic acid having the formula ##STR2## or an alkali metal salt or alkaline earth metal salt thereof in the presence of dimethylformamide.
摘要:
Salts of aromatic 1,2-dicarboxylic acids having hydrophobic groups attached to the benzene ring, especially alkali metal salts of C10-C20 alkyl and alkenyl phthalic acids, are used as detergency builders.
摘要:
New chemical compounds useful as intermediates are 5-(1-methyl3,4,5,6,7,7-hexahalo-norborn-4-ene-1)-isophthalic acid and 4-(1methyl-3,4,5,6,7,7-hexaholo-norborn-4-ene-1)-orthophthalic acid, formed by oxidation of the primary or secondary alkyl groups containing from one to ten carbon atoms on the benzene ring of the Diels-Alder adduct of equimolecular amounts of hexahalocyclopentadiene and either 3,5-dialkyl- Alpha -methylstyrene and 3,4-dialkyl- Alpha -methylstyrene. The acyl derivatives of these intermediates do not burn or support combustion and are also useful as extreme-pressure additives in lubricating oils. The following acyl derivatives of 5-(1-methyl3,4,5,6,7,7-hexachloro-norborn-4-ene-1)-isophthalic acid have been prepared: the dichloride, diamide, dianilide, diethylester, polyphenylester, poly(chlorophenyl) ester, poly-ethylene glycol ester, diphenylthioester, di-methallylester, and unsaturated polyester. Also, the co-polyphenylesters of 5-(1-methyl3,4,5,6,7,7-hexachloro-norborn-4-ene-1)- isophthalic acid and terephthalic or adipic acid; the polyamide of 5-(1-methyl3,4,5,6,7,7-hexachloro-norborn-4-ene-1)-isophthalic acid and 1,6hexanediamine; the copolyamides of 5-(1-methyl-3,4,5,6,7,7hexachloronorborn-4-ene-1) isophthalic acid and 1,6-hexanediamine and terephthalic acid or adipic acid; the co-polyethylene glycol ester of 5-(1-methyl-3,4,5,6,7,7-hexachloro-norborn-4-ene-1) isophthalic acid and terephthalic acid; and a phosphorus adduct of 5-(1-methyl-3,4,5,6,7,7- hexachloro-norborn-4-ene-1) have been prepared.
摘要:
Tetrabromophthalic anhydride is produced by brominating phthalic anhydride at elevated temperatures in the presence of sulfuric acid and a bromination catalyst using bromine and hydrogen peroxide as the brominating agent.
摘要:
The solid-state disproportionation of potassium benzoate to dipotassium terephthalate and benzene using zinc benzoate catalyst is conducted with the solid reagents dispersed as a slurry in liquid terphenyl diluent. The reactor effluent is water-quenched to obtain a liquid terphenyl phase, a water phase containing dissolved phthalates, and solid spent zinc oxide catalyst. The catalyst is separated by filtration, reslurried in terphenyl, reacted with benzoic acid to regenerate zinc benzoate, and the resultant catalyst slurry recycled to the reactor. The solids-free aqueous phase is contacted with benzoic acid to precipitate terephthalic acid crystals and form soluble potassium benzoate. The crystals are separated by filtration and recovered as a product of the process. The aqueous potassium benzoate solution is concentrated by evaporation and then contacted with hot terphenyl to produce a slurry of solid potassium benzoate in terphenyl for recycle to the reactor. Byproduct benzene is vented from the reactor and/or the effluent quench step.
摘要:
In the production of benzene carboxylic acids by the oxidation of alkyl benzenes with molecular oxygen in the presence of a heavy metal oxidation catalyst, the catalyst is recovered as a residue contaminated by iron and tar-like by-products which act as inhibitors for the oxidation reaction and cannot be re-used as such. The catalyst is recovered in such a purity as re-usable by extracting the residue by water, regulating the pH of the aqueous phase to a value more than 5 but not exceeding 8 to thereby separate the tar-like products as an oily float and iron as precipitates and removing such oily float and precipitates from the aqueous phase.
IN WHICH R AND R'' ARE EACH A SUBSTITUENT SELECTED FROM THE GROUP CONSISTING OF NON-SUBSTITUTED-ARYL, ARYLMETHYL, DIARYLMETHYL, TRIARYLMETHYL, ALKYLARYL, ALKOXYARYL, SULFOARYL, CARBOXYARYL, ARYLARYL, AND ARYLOXARYL SUBSTITUENTS, USEFUL IN A CHEMILUMINESCENT COMPOSITION. A COMPOUND OF THE FORMULA:
摘要:
Various derivatives of 8-carboxy-1(2H)phthalazinones are antiinflammatory agents and chemical intermediates for the preparation of 3-keto-2,3-dihydro-),2,8,9-tetraazaphenalenes.